National Stock Number (NSN) 6680-00-001-3675, or NIIN 000013675, (indicator,sight,liquid) was assigned September 27, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Mar 25, 2012. There have been 3 contracts issued for this part number, with 3 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM4A412V4488, SPM4A711MJ327, SPM4A711MJ327, SPM4A610V2238. The total value of the awarded contracts has been US$ 32,918.71.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 25, 2011, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 03175. [AN ITEM SO DESIGNED TO HAVE A PORTION OR ALL OF ITS BODY TRANSPARENT TO PERMIT THE VISUAL EXAMINATION OF THE AMOUNT OF LIQUID IN A PRESSURE VESSEL, BOILER, EVAPORATOR, STILL, PROCESSING TANK, RESERVOIR, PIPE TUBING LINE, AND THE LIKE, AND/OR TO DETERMINE THE FLOW TO A LUBRICATED PART. IT MAY ALSO BE PROVIDED WITH AN ELEMENT THAT CHANGES COLORS TO INDICATE CHANGES IN MOISTURE CONTENT. THE ITEM MAY HAVE A MEANS FOR REFILLING. EXCLUDES:INDICATOR, LIQUID QUANTITY AND INDICATOR, RATE OF FLOW.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6680000013675 does not contain precious metals.
This NSN is associated to Schedule B 9026107000: instruments and apparatus for measuring or checking the flow or level of liquids, nesoi. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334513: instruments and related products manufacturing for measuring, displaying, and controlling industrial process variables.
This information was last updated on Aug 01, 2025.